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Finding the Fourth Proportional to 69,670.97, 96,142.72 and 39,456.51

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Solution

The fourth proportional to 69,670.97, 96,142.72 and 39,456.51 is: 54,448.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,670.97 : 96,142.72 = 39,456.51 : x
  2. Step 2: Convert to fraction form
    69,670.97/96,142.72 = 39,456.51/x
  3. Step 3: Cross multiply
    69,670.97x = 96,142.72 × 39,456.51
  4. Step 4: Simplify right side
    69,670.97x = 3,793,455,952.75
  5. Step 5: Solve for x
    x = 3,793,455,952.75/69,670.97
  6. Step 6: Final answer
    x = 54,448.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.